Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4673083 | Storage container for a tape cassette | — | 1987-06-16 |
| 4530475 | Magnetic tape cassette with windows | Ottmar Buerkle, Kurt Schmidts, Alfred Schneider | 1985-07-23 |
| 4527690 | Tape cassette container | Kurt Schmidts | 1985-07-09 |
| 4449914 | Injection mold with demolding device | Kurt Schmidts, Edmond Zeysolff, Wilhelm Saumer | 1984-05-22 |